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Single multi-function OSD module OM708 Max7456

Introduction
OM708 Video character generator module is highly integrated and low-cost general-purpose

equipment for video overlay; it suitable to display Chinese characters is not too many

occasions and static video overlay.
OM708 is a single road OSD module, can operate in the internal mode and external mode,

Support the PAL and NTSC standard composite video, Support blinking characters, anti-color

display, and supports the character background display, the font have 256 characters,

providing software, the font can be edited, the model have RTC clock function .

Single multi-function OSD module OM708 Features
-Built-in font with two hundred fifty-six 12 * 18 dot character
-The font can be modified at any time by using our provide the software and the commands
-Succinct commands, the display position can be arbitrarily defined
-Display has three effects: can setting the overlay background, character blinking and

anti-color display
-Integrated amplify video signal function, can drive two-way video output
-Can display up to 16 rows, 26 characters per row
-You can define a static overlay mode, it is not lost when power-on
-Onboard real-time clock
-Communication interface has RS232/RS485/TTL/SPI/IIC, the default is RS232 mode
-Ultra-small size: 57 * 25mm

Single multi-function OSD module OM708 Fast hardware connection
-Power Connector
OM708 supply voltage is DC5V ± 5%, itself havn't voltage regulator function; the system

can not work, if the supply voltage is lower than 4.5V or higher than 5.5V. OM708 8-pin is

+5 V input (positive), 12 pins and 30 pins are the power ground (negative).

-Composite video signal
OM708 accept the P / N standard composite video, the default is PAL format (N format need

to customize), composite video input should meet 75Ω1V (Vp-p). The PAL standard composite

video signal input to the 36th pin of the OM708, superposed composite video have four road

outputs, you can choose two outputs to the display device.
3.3 Data signal superimposed
OM708 according to the user customization, support RS232, RS485, TTL, SPI and IIC mode, and

the factory default mode is RS232 standard, can with the computer or other data sources

directly connected.

-Serial communication
The OM9024's RXD is the RS232 level data receiver, TXD is the RS232 level data sender.

Respectively connecting with the computer or other data source TXD and RXD, Also note that

common ground connection.
OM708 20-pin (RX) is the RS232 level data receiver, 21-pin (TX) is the RS232 level data

sender, respectively connecting with the computer or other data source TXD and RXD, Also

note that common ground connection.

Product type The level
NEOM708-2 RS232
NEOM708-T TTL
NEOM708-4 RS485

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